The Click & Search function allows the user to browse the records. For example, click on the letter "A" next to "Search Terms." A drop down box will appear. To understand this, scroll down to "Advertising," and click it. A list of records which contain only "Advertising" as a search term will appear. Go back, and scroll down, and choose "Advertising | Street Scenes". This will then display records which contain both Advertising and Street Scenes.
The Click and Search feature is useful for browsing through records by search term or when a keyword search is too broad.